这章把脚本任务访问FTP的方法 全部给大家。
控件的使用大家如果有不懂得可以看下我之前的文章。
第一章：SSIS 学习之旅 第一个SSIS 示例（一）（上）
第三章：SSIS 学习之旅 数据同步
#region 连接FTP服务器
/// <summary>
/// 连接FTP服务器
/// </summary>
/// <param name="FtpServerIP">FTP连接地址</param>
/// <param name="FtpRemotePath">指定FTP连接成功后的当前目录, 如果不指定即默认为根目录</param>
public string FTPHelper(string FtpServerIP, string FtpRemotePath)
{
string ftpURI = "ftp://" + FtpServerIP + "/" + FtpRemotePath + "/";
return ftpURI;
}
#endregion
#region 文件上传FTP服务器
/// <summary>
/// 上传
/// </summary>
/// <param name="FilePathPendingAndName">文件详细路径</param>
/// <param name="FTPUrl">FTPUrl</param>
/// <param name="FTP_UserName">用户名</param>
/// <param name="FTP_PWD">密码</param>
public void Upload(string FilePathPendingAndName, string FTPUrl, string FTP_UserName, string FTP_PWD)
{
FileInfo fileInf = new FileInfo(FilePathPendingAndName);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPUrl + fileInf.Name));
reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD);
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInf.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
FileStream fs = fileInf.OpenRead();
try
{
Stream strm = reqFTP.GetRequestStream();
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
strm.Close();
fs.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
#endregion
#region 下载文件
/// <summary>
/// 下载文件
/// </summary>
/// <param name="filePath">本地路径</param>
/// <param name="fileName">文件名</param>
/// <param name="ftpUrl">FTP链接路径</param>
/// <param name="FTP_UserName">用户名</param>
/// <param name="FTP_PWD">密码</param>
public void Download(string filePath, string fileName, string ftpUrl, string FTP_UserName, string FTP_PWD)
{
try
{
FileStream outputStream = new FileStream(filePath + "\\" + fileName, FileMode.Create);
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpUrl + fileName));
reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD);
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
#endregion
#region 删除文件
/// <summary>
/// 删除文件
/// </summary>
public void Delete(string fileName)
{
try
{
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + fileName));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
reqFTP.KeepAlive = false;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}
#endregion
#region 获取当前目录下文件列表(不包括文件夹)
/// <summary>
/// 获取当前目录下文件列表(不包括文件夹)
/// </summary>
/// <param name="url">连接FTP服务器地址</param>
/// <param name="ftpUserName">用户名</param>
/// <param name="ftpPassword">密码</param>
/// <returns></returns>
public string[] GetFileList(string url, string ftpUserName, string ftpPassword)
{
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(url));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserName, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
string FileName = "";
while (line != null)
{
if (line.IndexOf("<DIR>") == -1)
{
FileName = "";
FileName = Regex.Match(line, @"(?<=IN)([.\S\s]*)(?=csv)", RegexOptions.IgnoreCase).Value.ToString() ;
if (FileName.Trim() != "")
{
FileName = "IN" + FileName + "csv";
result.Append(FileName + "|");
}
}
line = reader.ReadLine();
}
//result.Remove(result.ToString().LastIndexOf(‘\n‘), 1);
reader.Close();
response.Close();
}
catch (Exception ex)
{
throw (ex);
}
return result.ToString().Split(‘|‘);
}
#endregion
#region 判断当前目录下指定的文件是否存在
/// <summary>
/// 判断当前目录下指定的文件是否存在
/// </summary>
/// <param name="RemoteFileName">远程文件名</param>
public bool FileExist(string FTPUrl, string RemoteFileName, string FTP_UserName, string FTP_PWD)
{
string FileName = "IN_NORMAL_" + Regex.Match(RemoteFileName, @"(?<=IN_NORMAL_)([.\S\s]*)(?=csv)", RegexOptions.IgnoreCase).Value.ToString() + "csv";
string[] fileList = GetFileList(FTPUrl, FTP_UserName, FTP_PWD);
foreach (string str in fileList)
{
if (str.Trim()==FileName.Trim())
{
return true;
}
}
return false;
}
#endregion
#region 更改文件名
/// <summary>
/// 更改文件名
/// </summary>
/// <param name="currentFilename">现有文件名称</param>
/// <param name="newDirectory">新的文件名称</param>
/// <param name="FTPUrl">FTPUrl</param>
/// <param name="FTP_UserName">用户名</param>
/// <param name="FTP_PWD">密码</param>
public void ReName(string currentFilename, string newFilename, string FTPUrl, string FTP_UserName, string FTP_PWD)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(FTPUrl + currentFilename));
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(FTP_UserName, FTP_PWD);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
//File.Move()
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{ }
}
#endregion
#region 移动文件夹
/// <summary>
/// 移动文件夹
/// </summary>
/// <param name="currentFilename">现有文件名称</param>
/// <param name="newDirectory">新的文件名称</param>
/// <param name="FTPUrl">FTPUrl</param>
/// <param name="FTP_UserName">用户名</param>
/// <param name="FTP_PWD">密码</param>
public void MovieFile(string currentFilename, string newDirectory,string FTPUrl, string FTP_UserName, string FTP_PWD)
{
ReName(currentFilename, newDirectory, FTPUrl, FTP_UserName, FTP_PWD);
}
#endregion
#region 创建文件夹
/// <summary>
/// 创建文件夹
/// </summary>
public void MakeDir(string dirName)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + dirName));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{ }
}
#endregion
#region 获取指定文件大小
/// <summary>
/// 获取指定文件大小
/// </summary>
public long GetFileSize(string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI + filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{ }
return fileSize;
}
#endregion
至此 SSIS 学习之旅 到这里就结束了。希望对大家的工作有所帮助吧。
时间： 2024-10-12 15:58:26